Hobby horse



FIG. 1 is a top, and right side perspective view of a hobby horse embodying my ornamental design constituting my invention;

FIG. 2 is a right side perspective view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a hobby horse, as shown and described. 